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Metals and their compounds are part of the fabric of modern society due to their unique properties, such as their conductivity, mal?leability, hardness, lustre, or recyclability. These properties impart a variety of func?tionality in various present products as well as future sustainability enabling solutions. Most of the highly-valued products of modern technology, such as computers, MRI scan?ners, aircraft engines, and satellites would be impossible without metals. Nonetheless, their production and use, as is true for all re-sources that we extract and use, are associ?ated with potential environmental impacts. In this report, an assessment is made of the literature on metals flows and cycles in na?ture and in society, the way they are connect?ed, and the potential impacts related to them. Four areas of attention emerge from this as?sessment as important information for a sus?tainable metals management.